1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.options;
  24 
  25 import java.util.EnumSet;
  26 
  27 public class EnumOptionValue<T extends Enum<T>> extends OptionValue<T> {
  28     final Class<T> enumClass;
  29 
  30     @SuppressWarnings("unchecked")
  31     public EnumOptionValue(T value) {
  32         super(value);
  33         if (value == null) {
  34             throw new IllegalArgumentException("Value must not be null");
  35         }
  36         this.enumClass = (Class<T>) value.getClass();
  37     }
  38 
  39     /**
  40      *
  41      * @return the set of possible values for this option.
  42      */
  43     public EnumSet<T> getOptionValues() {
  44         return EnumSet.allOf(enumClass);
  45     }
  46 
  47     @Override
  48     public void setValue(Object v) {
  49         try {
  50             super.setValue(Enum.valueOf(enumClass, (String) v));
  51         } catch (IllegalArgumentException e) {
  52             throw new IllegalArgumentException("\"" + v + "\" is not a valid option for " + getName() + ".  Valid values are " + EnumSet.allOf(enumClass));
  53         }
  54     }
  55 }